I wouldn't really worry about feeling unoriginal, as most ideas stem from other ones anyway. As long as your own spin on it takes the ideas in interesting directions, I'm sure people will respond to it positively. One of my favorite novels I'm working takes heavy inspiration from Final Fantasy, Xenogears, and Neon Genesis Evangelion but overtime, I've become to see how it has transformed itself into it's own unique voice. This is a pretty neat video I found a few years back.

Anyway, I hope your game comes to light eventually, just stay passionate about it and keep working and you'll eventually see the fruits of your labor.